ARCS Sample Manipulation Concept Overview

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ARCS Sample Manipulation Concept Overview
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ARCS Sample Area
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Sample Manipulation Design Goals

• Provide a system which will allow any piece of
  sample environment equipment to be mounted
  directly to the device
• Provide 360 degrees of sample rotation (yaw)
• Provide up to 10 degrees of tilt (pitch and
  roll)
• Provide accuracy of 0.02 degrees ideally, 0.1
  degrees minimally for each movement
• Maintain system vacuum

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Example of Sample Tilt
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Potential ARCS Solution

• Three Part Design
• Hexapod to provide tilting
• Rotary vacuum seal to provide rotation
• Welded metal bellows to allow tilting while
  maintaining vacuum

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Hexapod (Stewart Platform)

• 6 Degree of Freedom Motion
• Mature Design, both hardware and software
• Ability to handle large loads
• High level of accuracy (as low as .001mm)

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Rotary Hexapod in Action(Courtesy of Parallel
Robotic Systems Corporation)
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Rotary Vacuum Seal

• Provides 360 degrees of rotation
• Available to maintain UHV (up to 10-11 Torr)
• High level of precision
• lt.004 degrees resolution
• lt.008 degrees repeatability
• lt.0035 degrees backlash

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Welded Bellows

• Would mount to the vacuum tank on one end,
  hexapod on the other
• Must maintain system vacuum
• Must be able to sustain deflection due to the
  tilting of the sample
• Must sustain effects due to radiation and
  magnetism

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Tilting Options

• 10 Degrees of Tilt
• 12.3 cm of Lateral Deflection (4.86)
• 5 Degrees of Tilt
• 6.2 cm of Lateral Deflection (2.44)

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Costing of 80cm Options

• Hexapod 200,000
• Bellows 100,000
• Rotation Stage 90,000
• Total Cost 390,000

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Costing of 40cm Options

• Hexapod 180,000
• Bellows 80,000
• Rotation Stage 43,000
• Total Cost 303,000

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Sample Manipulation Costing Options

• 40 cm Sample Size Rotation
• 43,000
• 90 cm and 40cm Sample Size, Rotation
• 90,000
• 40 cm Flange Size Tilt and Rotation
• 303,000
• 90 cm and 40 cm Flange Size Tilt and Rotation
• 390,000

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ARCS Sample Manipulation Future Planning

• Which Option (if any) is most attractive?
• Off the Shelf, or In-house design?
• Could we combine the Insertion device with a
  Hexapod concept?